Thursday, April 10, 2014

GeoJSON Your Google Maps

Google recently added GeoJSON support to the Google Maps API. Yesterday the Google Geo Developers blog published an interesting tutorial on how to Build a Map Infographic with Google Maps & JavaScript. The tutorial is a nice introduction into how to create a Google Maps visualization of US Census data.

You can check out the finished map here. The map allows you to view choropleth layers of demographic data for US states. The map uses GeoJSON to load the US state polygons. The tutorial itself explains how you can load GeoJSON files from Google Maps Engine using the Google Maps API. There is also a useful explanation of how you can load GeoJSON data from the US Census API with the Maps API.